Explosion-proof PLC electric control cabinet, two-working explosion-proof positive pressure cabinet, non-standard customized positive pressure explosion-proof cabinet, made of 304 stainless steel

Inverter Explosion-proof Positive Pressure Cabinet Distribution Box Control Box

Scope of Application

1. Suitable for hazardous locations in Zone 1 and Zone 2 of gas environment;
2. Suitable for Class IIA, IIB, IIC gas environments;
3. Suitable for flammable dust environments in Zone 20, Zone 21 and Zone 22;
4. Suitable for environments with temperature group T1-T6;
5. This product is suitable for factories such as petrochemical industry, offshore drilling platforms, metallurgy, medicine, light industry, textile, wine making, paint, coating, food, bioengineering, aerospace engineering facilities, etc.;

Product Features

1. The explosion-proof positive pressure cabinet is mainly composed of cabinet body, automatic control system, air distribution system, alarm system and power distribution system; The cabinet is composed of positive pressure chamber and auxiliary chamber, the positive pressure chamber is equipped with the user's power distribution system components, and the auxiliary chamber is equipped with the automatic control system.
2. The explosion-proof positive pressure cabinet products adopt the "Ergong Explosion-proof" cabinet frame, the main and auxiliary panels are of left-right structure, up-down structure, console type and so on, installed on cable trench base, incoming line from bottom, operated at front door, maintained at front or rear door.
3. The box-type explosion-proof positive pressure cabinet products are made of high-quality steel plate or stainless steel welded structure, the main and auxiliary panels are of up-down structure, installed in hanging type, incoming line from bottom, operated and maintained at front door.
4. The console-type explosion-proof positive pressure cabinet products are formed by folding and welding high-quality steel plates, the main and auxiliary panels are of front-rear structure, installed on base, incoming line from bottom, operated at console

5. The explosion-proof positive pressure cabinet is divided into ventilation type and compensation type according to the air intake mode. The ventilation type supplies air continuously and uninterruptedly, and the working heat of the components installed in the positive pressure chamber can be taken away by the air path, which has good heat dissipation function, suitable for solving the heat dissipation problem of high-power explosion-proof inverters; The compensation type supplies air intermittently, and the positive pressure chamber must have good airtightness to ensure low air consumption.
6. The user must provide air source for the explosion-proof positive pressure cabinet, which is required to be purified air or nitrogen, and the air source pressure is 0.2~0.8Mpa; Usually the instrument air on the user's site can meet the requirements.
7. The steel plate material generally uses GB710-88 cold-rolled steel plate, and can also select GB3280-84 stainless steel material according to user requirements.

Inverter Explosion-proof Positive Pressure Cabinet Distribution Box Control Box

Technical Parameters

Explosion-proof mark: ExdeIIBT4/T5/T6, ExdeIICT4/T5/T6, DIPA20TA,T4/T5/T6;
Rated voltage: AC220/380V, non-standard voltage: 12V/24V/36V/127V/660V;
Main switch current: 10A—800A; Branch switch current: 1A—630A;
Protection level: IP54/IP55/IP65;
Thread specification: DN15-DN100/G1/2-G4 inches
Incoming line specification: diameter 6mm-80mm; Outgoing line specification: diameter 6mm-80mm;
Incoming and outgoing line direction: upper inlet and upper outlet, lower inlet and lower outlet (can be customized according to customer requirements without restrictions)

Explosion-proof Principle
The explosion-proof positive pressure cabinet adopts the explosion-proof measure of isolating the ignition source with medium. That is, the electrical components used by the user are installed in a cabinet filled with positive pressure clean gas, so that the flammable and explosive mixed gas in the external environment cannot contact the electric spark or dangerous temperature generated when the electrical components work normally, so as to achieve the purpose of electrical explosion protection.